CO01650 - Carter Lake Dam No. 1


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Carter Lake Dams


	Statistics

General

Region (Map) : ............Great Plains

State (Map) ..................Colorado

County .........................Grand

Project: .........................Colorado-Big Thompson

Dam type: .................... Earthfill

Location: ......................7mi NW Berthoud

Watercourse: ..............Off Stream Storage

Reservoir: ....................Carter Lake

Construction Date: ....1950-1952

National ID Number ... CO01650

Hydrologic Unit Code ..

Dimensions

Crest Elevation of Dam: .......................5769.0 ft

Structural Height of Dam: .................... 214.0 ft

Crest Length: .........................................1235.0 ft

Top of Joint Use: .......................................... NA

Top of Active Conservation: ............. 5759.0 ft

Top of Inactive Conservation: ........... 5640.0 ft

Spillway Crest: .............................................. NA

Top of Dead Storage: .......................... 5618.0 ft

Streambed at Dam Axis : ..................... 5579.0 ft

Hydraulics

Normal Water Surface Elev: .............5759.0 ft

Hydraulic Height: ............................... 190.0 ft

Service Spillway Type:

Uncontrolled Crest ............................. No

Morning-Glory ........................................ No

Crest Length ..................................... N/A

Gated ................................................... No

Capacity at Elev: 0.0 ft, N/A

Auxiliary Spillway ...................................... No

Capacity at Elev. .............................. 0 cfs

Outlet Works Capacity at

Elevation 5763.0 ft., .....................1,200 cfs

Hydrology

Drainage Area: ..................................... 3.7 sq mi

Hydrometeorological Report HMR 55

Flood Type: ................................Winter General

Storm Duration: ......................................... 72 hrs

Probable Maximum Flood (PMF) Report:

Peak Inflow: ...................................... 35,780 cfs

Inflow Volume: ..............................8,060 acre-ft

Flow Duration: .................................... 5.5 days

PMF Routing MWS Elev.: ....................... N/A

Initial Routing Elev: ........................... 5759.0 ft

Study Date: .................................. March 1985

Power Generation

Power Generation at Dam Site - None

Bureau of Reclamation Power Program

Narration

Geology

Dam No. 1, the largest, occupies a gap across the Dakota sandstone hogback, and ifs founded on Morrison shale and limestone and the Sundance sandstone. The abutments are Dakota sandstone and sale, and all the strata have about 15 degree dip downstream. The geology of Dam No. 2 is somewhat more complex. Due to sharp echelon folding, the hogback structure ends abruptly near dam No. 2 against a southward plunging anticline. The result is that the foundation strata dip to the southwest into the right abutment, with dips varying from 5 degrees on the right abutment to 70 degrees on the left abutment. The dam rests on upturned edges of the Morrison shale and limestone, Sundance sandstone and the Lykins formation. Dam No. 3 rests entirely on Lyons sandstone.

Other Dams or Dikes which enclose Carter Lake

1) Carter Lake Dam No. 2
2) Carter Lake Dam No. 3

Links

| Recreation |

| Dams Located by State | USBR Colorado Dams | South Great Plains Region Dams |

| Owner: Bureau of Reclamation, Eastern Colorado Area Office,
11056 West County Road 18E, Loveland, CO 80537-9711, (970) 667-4410

| Operator: Northern Colorado Water Conservancy District,
PO Box 679, Loveland, CO 80539, (970) 667-2437

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